G - Physics – 06 – F
Patent
G - Physics
06
F
354/230.3
G06F 9/00 (2006.01) G05B 19/05 (2006.01) G05B 19/418 (2006.01) G06F 13/38 (2006.01)
Patent
CA 1145053
INDUSTRIAL CONTROL SYSTEM Abstract of the Disclosure An industrial control system in accordance with the present invention is provided with a plurality of diverse controlled devices (e.g., fans, pumps, valves, solenoids, relays, etc.) for effecting overall system control. Each device has a unique set of logic control functions and/or command sequences and is connected, through an input/output interface, to a stored- program single board computer that provides device control and monitoring. The computers each include a central processor con- trolled by a composite or "master" program which is common to all the computers and which includes instruction sequences for all logic control functions and command sequences that exist within the system. A user alterable interconnection device (UAID) permits only those logic control function and/or command sequence portions of the master program that relate to a particular one of the con- trolled devices to operatively connect with the particular input/ output ports associated with that controlled device. As the master program successively loops, only those logic control functions and/ or command sequences that relate to the particular controlled device, as determined by the user alterable interconnection device, are operative to address the input/output ports associated with the controlled device and thereby effect device control and monitoring. The invention permits simple and efficient dedication of a plurality of single board computers having only one master program to an equal member of diverse controlled devices without the drawbacks normally associated with dedicated stored-program controllers.
349809
Ewing Donald L.
Grisham James S.
Johnson William D.
Forney Engineering Company
Meredith & Finlayson
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